Dual-sensor technique for extending the dynamic range of a fiber-optic interferometric sensor

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)850-852
Journal / PublicationOptics Letters
Volume13
Issue number10
Publication statusPublished - Oct 1988
Externally publishedYes

Abstract

A sensor consisting of two fiber-optic interferometers of slightly different sensitivities can offer both high sensitivity and a wide dynamic range when the phase difference between the two interferometer outputs is used to identify the order of the fringe from either interferometer output. This technique is demonstrated with a polarimetric temperature sensor utilizing two different lengths of stress-induced birefringent fibers as sensing elements. © 1988, Optical Society of America.